package thread;

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

/*
* 线程池
*
* */
public class ThreadPoolDemo {
    public static void main(String[] args) {
        ExecutorService pool = Executors.newFixedThreadPool(5);
        for(int i=0;i<5;i++){
            Runnable r = new Runnable() {
                @Override
                public void run() {
                    Thread t = Thread.currentThread();
                    System.out.println(t+"正在执行任务...");
                    try {
                        Thread.sleep(5000);
                    } catch (InterruptedException e) {
                       e.printStackTrace();
                    }
                    System.out.println(t+"执行任务完毕");
                }
            };
            pool.execute(r);
            System.out.println("将一个任务交给线程池");
        }
       // pool.shutdownNow();
        pool.shutdown();
        System.out.println("线程池已关闭！");
    }
}
